/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.volley;

/**
 * Retry policy for a request.
 */
public interface RetryPolicy {

	/**
	 * Returns the current timeout (used for logging).
	 */
	public int getCurrentTimeout();

	/**
	 * Returns the current retry count (used for logging).
	 */
	public int getCurrentRetryCount();

	/**
	 * Prepares for the next retry by applying a backoff to the timeout.
	 * 
	 * @param error
	 *            The error code of the last attempt.
	 * @throws VolleyError
	 *             In the event that the retry could not be performed (for
	 *             example if we ran out of attempts), the passed in error is
	 *             thrown.
	 */
	public void retry(VolleyError error) throws VolleyError;
}
